Samba DNS use-after-free DoS (CVE-2020-14383)

Sep 09, 2026

A use-after-free vulnerability in the Samba AD DC DNS server causes a denial of service.

Vulnerability ID	Vulnerability Overview
CVE-2020-14383	The Samba internal DNS server contains a use-after-free flaw. An authenticated user can trigger this by adding and then requesting specific DNS records, crashing the RPC server.

Affected Supported TeraStations

TS5010/3020/3010
Fixed in firmware version 6.12

Date	Description
09/09/2026	Initial release